Syslog and SNMP (Simple Network Management Protocol) are protocols used for different purposes in network management and monitoring. Syslog is primarily a standard for message logging, used to collect system event information from various systems and devices, and it typically sends log data to a centralized Syslog server. SNMP, on the other hand, is used to manage and monitor network devices, and it can send alerts or `traps' to a management station.
Both Syslog and SNMP are considered push-based protocols because the information is generally sent (or `pushed') from the devices to the server or management station without the server requesting (or `pulling') the data.